I am given these stickers to place on my calendar for when I put in my Nuvaring and when I take it out. My mom thought she was being helpful when she ripped off last month of my calendar, but my sticker was on there saying when I took my BC out. I am putting in my Nuvaring today, but I THINK I'm a day late.. how long do I have to wait until I'm 100% protected again? ?